Highest salary at Greenfield in year 2012 was $61,590. Number of employees at Greenfield in year 2012 was 29. Average annual salary was $36,715 and median salary was $50,255. Greenfield average salary is 22 percent lower than USA average and median salary is 16 percent higher than USA median salary. From 2011 to 2012, the average salary of employees at this employer increased 1.3 percent, the median salary increased 6.5 percent.